OCR General Certificate of Secondary Education (GCSE) Biology Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the OCR GCSE Biology Exam with our comprehensive study resources. Practice with quizzes, flashcards, and detailed explanations to enhance your understanding. Ace your exam and secure your academic success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which type of blood cell is primarily responsible for fighting infections?

Red blood cells
Platelets
White blood cells
Plasma cells

The correct answer is: White blood cells

White blood cells are crucial in the immune response, as they play a significant role in identifying and eliminating pathogens like bacteria and viruses. Unlike red blood cells, which are designed to transport oxygen throughout the body, and platelets, which are involved in blood clotting, white blood cells actively seek out and destroy foreign invaders, making them essential for fighting infections. They comprise various types, including lymphocytes and neutrophils, each with specific functions tailored to combat infections effectively. Plasma cells, a type of white blood cell, specifically produce antibodies to neutralize pathogens; however, the broader category of white blood cells encompasses a wide range of functions critical for overall immune health.